Serpent 500914 13mm Rear Coil Spring rr Pink 2.1lbs  [SER500914]

Rear coil spring specifications

The Serpent 500914 is a 13mm rear shock coil with a 2.1lbs spring rate and a pink coating. This part is intended for the rear (rr) position to influence ride height, initial stiffness, and how weight shifts during cornering in small-scale RC cars.

Compatibility guidance: this spring is appropriate where a 13mm coil is specified for rear shock assemblies. Verify spring seat dimensions and retainer style on your shocks rather than assuming compatibility with proprietary or modified shock designs.

Installation notes: remove the shock from the chassis, compress the shock body to take out preload, and exchange springs while keeping orientation and spring seats noted. Refit and set initial preload so the spring sits correctly without being overly compressed at static ride height. Run a few short tests and tweak preload carefully to reach the desired traction versus roll stiffness trade off.

Tuning role: a 2.1lbs rear spring will stiffen the rear compared with lower-rate springs, often reducing rear squat under power and changing mid-corner balance. Coordinate spring rate changes with damper oil weight and piston choices to achieve the target damping response.